A deliberate practice app for guitar players who want to level up

Cool! I guess there needs to be a way for people to share new lessons to practise, it gets complicated with copyright pretty fast.

For real "lessons" you'd probably need to start at chord progressions, go into scales and how the chords relate back to those, then move to these types of soloing technique lessons.

AlphaTab is the star here https://github.com/CoderLine/alphaTab - it's been maintained tirelessly for years by Daniel Kuschny.

I've started to build this type of lessons sitea few times in the past and never really got it together enough to release anything. I've done scale/chord/arpeggio tools: https://github.com/webprofusion/scalex

What do you need "scales" practice for on guitar? It's a totally relative instrument except when playing on empty strings, so there's only one "scale" pattern that you have to learn. It's nothing like a keyboard!

There are dozens of scales to learn, with roots all over the fretboard. Each useful for different things. Just the basic minor pentatonic requires five different patterns. Eight note scales require eight different patterns, with various roots depending on the mode you want to play.

The Guitar Grimoirr scale book is 200 pages!

By "pattern" you mean starting the scale on a different note/step? (or, equivalently, rolling the interval arrangement and ending up with one that's seemingly "different"?) That seems like a trivial change - if you can play C-D-E-F etc. you can play D-E-F etc. Why does it have to be "learned" separately?

The patterns are different on different string sets. You don't need to learn DEF with the same pattern again, but you do need to learn all the ways of playing CDE

But then the pattern across strings is also "relative" and only depends on the guitar tuning you're playing. For instance in the standard tuning, two neighboring strings are always a perfect fourth apart (five frets) unless they're the G-B strings in which case they're a major third apart (four frets). So if you know where you'd be playing a note on one string, that same note is just five frets back or four frets back on the next one. Which is again a totally "relative" framing that works for any individual note the same way. You can even figure out where you'd have to play if the tuning was non-standard. These patterns only have to be practiced a little bit, there's not really any need to learn them from scratch.

(If anything, I would want a "guitar learning" app to automatically come up with its own exercises, similar to ear training apps for learning to recognize intervals - and using something like a spaced repetition approach to evaluate how the user is doing.)